// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_BASE_CURSOR_CURSOR_LOADER_X11_H_
#define UI_BASE_CURSOR_CURSOR_LOADER_X11_H_

#include <X11/Xcursor/Xcursor.h>
#include <map>

#include "base/compiler_specific.h"
#include "base/macros.h"
#include "ui/base/cursor/cursor.h"
#include "ui/base/cursor/cursor_loader.h"
#include "ui/base/ui_base_export.h"
#include "ui/base/x/x11_util.h"
#include "ui/gfx/display.h"

namespace ui {

class UI_BASE_EXPORT CursorLoaderX11 : public CursorLoader {
public:
    CursorLoaderX11();
    ~CursorLoaderX11() override;

    // Overridden from CursorLoader:
    void LoadImageCursor(int id, int resource_id, const gfx::Point& hot) override;
    void LoadAnimatedCursor(int id,
        int resource_id,
        const gfx::Point& hot,
        int frame_delay_ms) override;
    void UnloadAll() override;
    void SetPlatformCursor(gfx::NativeCursor* cursor) override;

    const XcursorImage* GetXcursorImageForTest(int id);

private:
    // Returns true if we have an image resource loaded for the |native_cursor|.
    bool IsImageCursor(gfx::NativeCursor native_cursor);

    // Gets the X Cursor corresponding to the |native_cursor|.
    ::Cursor ImageCursorFromNative(gfx::NativeCursor native_cursor);

    // A map to hold all image cursors. It maps the cursor ID to the X Cursor.
    typedef std::map<int, ::Cursor> ImageCursorMap;
    ImageCursorMap cursors_;

    // A map to hold all animated cursors. It maps the cursor ID to the pair of
    // the X Cursor and the corresponding XcursorImages. We need a pointer to the
    // images so that we can free them on destruction.
    typedef std::map<int, std::pair<::Cursor, XcursorImages*>>
        AnimatedCursorMap;
    AnimatedCursorMap animated_cursors_;

    const XScopedCursor invisible_cursor_;

    DISALLOW_COPY_AND_ASSIGN(CursorLoaderX11);
};

} // namespace ui

#endif // UI_BASE_CURSOR_CURSOR_LOADER_X11_H_
